Forecasters say Hurricane Hilary is now a Category 2 storm in the Pacific south of Mexico.
Hilary's maximum sustained winds were near 105 mph (170 kph)
The hurricane is not forecast to make landfall, though officials say it is expected to rake the coast with wind, rain and heavy surf.
The U.S. National Hurricane Center says Hilary could become a
major hurricane by Thursday night.
A tropical storm warning is in effect for Mexico's coast from Lagunas de Chacahua to Punta San Telmo.
A tropical storm watch is in effect for west of Punta San Telmo to Manzanillo.
Hilary is centered about 90 miles south of Acapulco, Mexico, and is moving west-northwest near 10 mph (17 kph).
In the Atlantic, Tropical Storm Ophelia is expected to start weakening soon.
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